Whole bronze wire , for gear pump,and explosion motor ,Single-phase asynchronous . This is YB style motor ,suitable to portable gear pump ,with copper wire inner .connector by couplerModel:YB2Voltage:220V,50HzCurrent:4.78APower:0.75KwSpeed:2800rpmInsulation level :BNoise:67dB(A)IP Grade:IP54 AC 750W Two Phrase Explosion proof Motor /WCB-75 Gear Pump Motor / Single-phase motor